Collapsible cup



FIG. 1 is a perspective view of a collapsible cup showing our new designin extended position;

FIG. 2 is a side view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a top view thereof; and,

FIG. 5 is a bottom plan view.

The broken lines in FIG. 5 depict portions of the collapsible cup thatform no part of the claimed design.

CLAIM The ornamental design for a collapsible cup, as shown anddescribed.